void GLWidget::drawNeck(const float NECK_X_SCALE, const float NECK_Y_SCALE,
const float BEAK_UP_X_SCALE, const float BEAK_UP_Y_SCALE,
const float BEAK_DOWN_X_SCALE, const float BEAK_DOWN_Y_SCALE,
const float BODY_Y_SCALE)
{
transformStack().pushMatrix();
// position neck and joint together
transformStack().translate(-2.5, BODY_Y_SCALE/2.5);
transformStack().pushMatrix();
transformStack().rotateInDegrees(neck_joint_angle);
// Draw beak
drawBeak(NECK_X_SCALE,BEAK_DOWN_X_SCALE,BEAK_DOWN_Y_SCALE,
BEAK_UP_X_SCALE,BEAK_UP_Y_SCALE);
transformStack().scale(NECK_X_SCALE,NECK_Y_SCALE); // 50,40
transformStack().translate(0.0, 0.4);
m_gl_state.setColor(0.0, 1.0, 1.0);
m_unit_neck.draw();
transformStack().popMatrix();
transformStack().pushMatrix();
drawJoint(1.0, NECK_Y_SCALE/5.0);
transformStack().popMatrix();
transformStack().popMatrix();
}
void drawHead(){
glPushMatrix();{
// Move the head up to the hinge
glTranslatef(0.0, HEAD_SCALE, 0.0);
// Rotate the head along the hinge
glRotatef(headRotation, 0.0, 0.0, 1.0);
// Scale the head down from the size of the body
glScalef(HEAD_SCALE, HEAD_SCALE, 1.0);
// Move the head into its correct position
glTranslatef(0.0, HEAD_SCALE/4, 0.0);
glColor3f(1.0, 0.0, 0.0);
Point headPoints[] = {
// top point
{-0.2, 0.5},
// top right point
{0.35, 0.25},
// bottom right point
{0.5, -0.35},
// bottom left point
{-0.5, -0.35},
// top left point
{-0.4, 0.3}};
drawPolygon(5, headPoints);
drawBeak();
// Draw eye
glPushMatrix();
{
// Move the eye to the top left part of the head
glTranslatef(-0.2, 0.2, 0.0);
// Scale the eye down
glScalef(0.05, 0.05, 1.0);
glColor3f(1.0, 1.0, 1.0);
drawCircle(1.0);
glPushMatrix();
{
// Move the pupil a bit to the left so it looks like
// the penguin is looking forward
glTranslatef(-0.1, 0.0, 0.0);
// Scale the pupil down
glScalef(0.5, 0.5, 1.0);
glColor3f(0.0, 0.0, 0.0);
drawCircle(1.0);
}
glPopMatrix();
}
glPopMatrix();
}
glPopMatrix();
// Draw neck joint
glPushMatrix();
{
glTranslatef(0.0, HEAD_SCALE, 0.0);
glScalef(LEG_SCALE * 0.1, LEG_SCALE * 0.1, 1.0);
glColor3f(1.0, 1.0, 1.0);
drawCircle(1.0);
}
glPopMatrix();
}
/* draws a penguin centered (roughly) at the origin
Also moves him around in a circle
It now takes a parameter that indicates whether or
no the penguin is a shadow (just for coloring purposes) */
void drawPenguin( int is_shadow )
{
/* the colors we apply to the bird */
/* Black does not really show lighting very well,
(or at all!) so the bird is now a blusih colour */
GLfloat bluish[3];
GLfloat orange[3];
if( is_shadow )
{
/* bluish and orange are both grey for a shadow */
bluish[0] = bluish[1] = bluish[2] = 0.2;
orange[0] = orange[1] = orange[2] = 0.2;
}
else
{
/* for normal penguin, normal colors */
bluish[0] = 0.08;
bluish[1] = 0.2;
bluish[2] = 0.35;
orange[0] = 1.0;
orange[1] = 0.5;
orange[2] = 0.0;
}
/* draw main body and head bluish */
glColor3fv( bluish );
glPushMatrix( );
/* Wobble the body a little bit */
glRotatef( wobble_amount, 0.0, 0.0, 1.0 );
drawHead( );
drawBody( );
/* draw the beak orange */
glColor3fv( orange );
drawBeak( );
glPopMatrix( );
/* draw penguin's left wing bluish */
glColor3fv( bluish );
drawLeftWing( );
/* draw the left foot orange */
glColor3fv( orange );
drawLeftFoot( );
/* to draw the penguins' right appendages, we just invert the world
along the X axis, and draw the left ones over again... */
glScalef( -1.0, 1.0, 1.0 );
glColor3fv( bluish ); /* bluish wing */
drawLeftWing( );
/* orange */
glColor3fv( orange );
/* to make the left and right rotate on an opposite way, we invert the right one... */
GLfloat temp = foot_move_amount;
foot_move_amount = abs( 90.0 - foot_move_amount );
drawLeftFoot( );
foot_move_amount = temp; /* reset the value for the left foot */
}